The cars which were manufactured under this name between 1921 and 1933 in Colombes, France were of exceptionally good quality. This is why the company lasted a lot longer than most of its competitors. The first Rally was a 'cycle car' powered by a Harley Davidson motorcycle engine. In 1922, the model could also be supplied with a SCAP, Chapuis or CIME four-cylinder engine. The small overhead valve engines had cylinder capacities of 989, 1098 or 1170 cc. Rally also built several models which never outgrew the prototype stage, such as a car with a 1492 cc eight-in-line engine by SCAP and a sports car with a four-cylinder Rally engine with two over-head camshafts which delivered 40 bhp at 3800 rpm.
The complete encyclopedia of Vintage Cars - Rob de la Rive Box